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#include "cache.h"
#include "run-command.h"
#include "exec_cmd.h"
int run_command_v_opt(const char **argv, int flags)
{
pid_t pid = fork();
if (pid < 0)
return -ERR_RUN_COMMAND_FORK;
if (!pid) {
if (flags & RUN_COMMAND_NO_STDIN) {
int fd = open("/dev/null", O_RDWR);
dup2(fd, 0);
close(fd);
}
if (flags & RUN_COMMAND_STDOUT_TO_STDERR)
dup2(2, 1);
if (flags & RUN_GIT_CMD) {
execv_git_cmd(argv);
} else {
execvp(argv[0], (char *const*) argv);
}
die("exec %s failed.", argv[0]);
}
for (;;) {
int status, code;
pid_t waiting = waitpid(pid, &status, 0);
if (waiting < 0) {
if (errno == EINTR)
continue;
error("waitpid failed (%s)", strerror(errno));
return -ERR_RUN_COMMAND_WAITPID;
}
if (waiting != pid)
return -ERR_RUN_COMMAND_WAITPID_WRONG_PID;
if (WIFSIGNALED(status))
return -ERR_RUN_COMMAND_WAITPID_SIGNAL;
if (!WIFEXITED(status))
return -ERR_RUN_COMMAND_WAITPID_NOEXIT;
code = WEXITSTATUS(status);
if (code)
return -code;
return 0;
}
}
int run_command_v(const char **argv)
{
return run_command_v_opt(argv, 0);
}
static int run_command_va_opt(int opt, const char *cmd, va_list param)
{
int argc;
const char *argv[MAX_RUN_COMMAND_ARGS];
const char *arg;
argv[0] = (char*) cmd;
argc = 1;
while (argc < MAX_RUN_COMMAND_ARGS) {
arg = argv[argc++] = va_arg(param, char *);
if (!arg)
break;
}
if (MAX_RUN_COMMAND_ARGS <= argc)
return error("too many args to run %s", cmd);
return run_command_v_opt(argv, opt);
}
int run_command_opt(int opt, const char *cmd, ...)
{
va_list params;
int r;
va_start(params, cmd);
r = run_command_va_opt(opt, cmd, params);
va_end(params);
return r;
}
int run_command(const char *cmd, ...)
{
va_list params;
int r;
va_start(params, cmd);
r = run_command_va_opt(0, cmd, params);
va_end(params);
return r;
}
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